I got one when they first starting selling them. your paying for the tygon tubing. which i believe is running at $1.90ft (usd). I went to the shop and asked them if they carried any of the faucet adapters because "mine broke". 10 dollars and 5 minutes later i received my overpriced spigot hookup and tubing adapter. Proceed to 10 minutes later where im at home depot buying the cheapest tubing on planet earth, which for this application, is just fine.
Total cost 20 dollars + 10,000 dollars in petrol to travel the 5 miles between shops.
So try to DIY this one, because in the shop they wanted 59.99 for the small one and 69.99 for the one with the long tube. -Insane
Other useful ideas that i have used.
Over sized tubing slid over the faucet itself, not so big it slides off, you want it to be a bit of a struggle getting it on so it does not blast all over your kitchen.
Run taps to desired temp, stop up the sink, pop a sump pump in there Ive got a little giant sump pump from 1992, works great.
Now all of these address the issue of fill, but if your trying to use it to suction and clean out your tank, than i feel its only appropriate to tell you that siphoning the water from the tank using a python is obscenely wasteful. You have to run water to suck water, im not sure the ratio but im sure it looks something like Loss : Loss. the old fashioned way, all be it a pain, is more efficient. (for your water bill)
Other ides include an inline pump vacuum system. where you suck the water out of your tank, through a net filter or any filter really, then it gets pumped right back up in the tank, detritus free. Its funny, i actually took my old python cleaning tube, put another end cap on it (from another cleaning tube) stuffed in filter media. then put it on the suction side of my vacuum, now i can do hour long very through cleanings of the tank without losing water and playing "Oh crap i have to vacuum fast otherwise ill be out of water" issue. leaving your ratio looking a little bit more like
Win:Win
Have a good one.
Alright enough babble, good luck, and pinch pennies!