i belive they make a hose you can swap from the 25 foot one to the larger 50 and 100 foot ones
its really simple to do, i doubt you have ever taken your python apart or not, but where the ends connect(like the part you screw onto the faucet adapter) that unscrews then there is a cone shaped plastic peice that is pressure fitted keeping the hose snug aginst the green attachment... the first time you take it apart its gona be tough to get apart but just reefing and yanking is what it takes
reason why i know this is because i cut the green plastic peice to allow more water flow and allow larger peices of plants threw the system with out cloggin it
if what i said dosent make sense i can take some pics
but yeah cliff notes there are hoses you can buy that will extend your python and will prob be cheeper than buying a whole new unit