Prices are US list prices read from each maker’s own store on 20 September 2026. Several are sale prices. They will move.
The Elegoo Neptune 4 Max wins by a distance: 420 x 420 x 480 mm, which is 84.7 liters, for $389. That is $4.59 per liter. Nothing else under $500 in our database gets below $16 per liter, and the next largest machine has less than a quarter of the volume.
The ranking
Volume is X times Y times Z from the maker’s spec page, divided by a million to get liters. Fifteen of the 25 printers in our printer database list under $500.
| # | Printer | Build volume (mm) | Liters | Price | $ per liter | Enclosed |
|---|---|---|---|---|---|---|
| 1 | Elegoo Neptune 4 Max | 420 x 420 x 480 | 84.7 | $389 | $4.59 | not stated |
| 2 | Qidi Q2 | 270 x 270 x 256 | 18.7 | $499 | $26.74 | yes |
| 3= | Bambu Lab A1 | 256 x 256 x 256 | 16.8 | $299 | $17.82 | no |
| 3= | Bambu Lab P1S | 256 x 256 x 256 | 16.8 | $359 | $21.40 | yes |
| 3= | Elegoo Centauri Carbon 2 Combo | 256 x 256 x 256 | 16.8 | $399 | $23.78 | yes |
| 6 | Anycubic Kobra 3 | 250 x 250 x 260 | 16.3 | $349 | $21.48 | not stated |
| 7 | Anycubic Kobra S1 | 250 x 250 x 250 | 15.6 | $401 | $25.66 | yes |
| 8 | Elegoo Neptune 4 Pro | 225 x 225 x 265 | 13.4 | $229 | $17.07 | no |
| 9= | Creality Ender-3 V3 SE | 220 x 220 x 250 | 12.1 | $199 | $16.45 | not stated |
| 9= | Creality Ender-3 V3 | 220 x 220 x 250 | 12.1 | $379 | $31.32 | no |
| 11 | Creality Ender-3 V3 KE | 220 x 220 x 240 | 11.6 | $279 | $24.02 | no |
| 12= | Flashforge Adventurer 5M | 220 x 220 x 220 | 10.6 | $249 | $23.38 | no |
| 12= | Flashforge AD5X | 220 x 220 x 220 | 10.6 | $349 | $32.78 | not stated |
| 14= | Bambu Lab A1 mini | 180 x 180 x 180 | 5.8 | $219 | $37.55 | no |
| 14= | Prusa MINI+ (kit) | 180 x 180 x 180 | 5.8 | $429 | $73.56 | no |
Read the prices with care
Three of these are sale prices. The P1S page showed $359 against a regular $399. The Adventurer 5M showed $249 against $399, and the AD5X $349 against $499. At their regular prices the P1S is $23.78 per liter, the Adventurer 5M $37.47 and the AD5X $46.86, which would make the AD5X the second worst value on the table and leave it one dollar inside the budget.
The Qidi Q2’s $499 came from a storefront listing that ships from China. We did not find a separately confirmed US price, so treat its place under the line as provisional.
The Centauri Carbon 2 price is for the Combo bundle, which includes Elegoo’s multicolor unit. Elegoo’s US store had no bare printer listed. The Prusa MINI+ price is the kit. Assembled is $459.
Liters flatter tall printers
A liter figure treats height and footprint the same, and they are not the same to you. Most big parts are limited by the bed, not the Z axis. Two examples from the table.
The Anycubic Kobra 3 (250 x 250 x 260) has less volume than the Bambu A1 (256 cubed), 16.3 against 16.8 liters. Its bed is also smaller, 625 cm² against 655 cm². So the A1 wins both ways.
The Neptune 4 Pro is the opposite case. It is eighth by volume, but its 13.4 liters come from a 225 mm square bed with 265 mm of height. If your parts are wide and flat, a 256 mm square bed gives you 29 percent more area. If they are tall and narrow, the Neptune’s extra 9 mm of Z beats every 256 mm cube here.
Before buying on volume, check the longest dimension of the thing you actually want to print against each axis. The fit check in our printer database does that axis by axis.
One more adjustment: Bambu’s slicer caps usable Z on the P1S at 250 mm by default even though the frame allows 256 mm, according to the note in our data from Bambu’s page. That trims its working volume to 16.4 liters.
What the Neptune 4 Max cannot do
An 84.7 liter build volume for $389 is remarkable, and it comes with limits that the spec page itself shows.
Its maximum bed temperature is 85 °C, stated at 25 °C ambient. That is the second lowest on our whole list. The filament data sheets we track put ABS beds at 80 to 100 °C and PC at 90 to 110 °C, and the page does not state an enclosure. So this is a PLA and PETG machine. PETG beds run 65 to 90 °C depending on brand. The Max gets into every brand’s range in our data but not to the top of eSUN’s or Prusament’s.
Big prints are also long prints, and long prints multiply the cost of a failure. A kilogram of PLA at 1.24 g/cm³ is only 0.81 liters of plastic, under 1 percent of this build volume, so a part that really uses the space will eat more than one spool. Run the numbers in the print cost calculator with a realistic failure rate before you plan a business around a large bed.
If you need volume and an enclosure under $500, the choice narrows to the Q2 (18.7 liters, heated chamber, provisional price), the P1S and the Centauri Carbon 2 (16.8 liters each) and the Kobra S1 (15.6 liters). None of them is within a factor of four of the Max on volume. Under this budget you can have big or you can have enclosed, and not both.
What I would pick
For helmets, cosplay armor, large vases and terrain in PLA: the Neptune 4 Max, without much thought. Nothing else here can print a 400 mm part in one piece.
For general use where size is a bonus: the Bambu A1 at $299. It ties for third on volume, has the best price per liter of any printer in the 16 liter class, and costs $60 less than the enclosed P1S. Pay the $60 if you expect to print ABS or ASA.
The worst value on this measure is the Prusa MINI+ at $73.56 per liter. People buy a MINI+ for reasons other than volume, and on volume alone the A1 mini gives you the same 5.8 liters for about half the price.
We have not tested any of these printers. Every figure is from the maker’s own page, with links in the printer database.
