Looking on Ebay for a new router and see two common types the 3040 and the 6040

6040 like this one here Item number: 270685987049
Looks to have water cooled spindle and VFD although the blurb says 9000 rpm ?
Working travel of 400 x 580 x 65
Price of £1215 inc shipping.

The 3040 Item number: 270813071786

Says working size 400 x 580 x 65 but has a max work size of 390 x 290 which matches the 3040 spec
this machine is £1260 for a machine half the size ?

Can anyone comment of these irregularities ?