The P.E.T. 10 itself costs 50,000 Uridium in Shop and is not available in Auction. It can also be assembled in the Assembly which will cost only 25,000 Uridium if you buy the parts, and will also give you 3,000 bonus Uridium to rename your P.E.T. It has always been for 50,000 Uridium. But has occasionally been offered with few CPU, Protocols and Fuel for Payment. Fuel can be purchased in the shop under "P.E.T./Gears" for 0.25 Uridium per unit, with a minimum of 4, as Uridium can only be spent in whole units. The maximum fuel capacity is 50.000 units.