I hope scrim doesnt mind me posting the price.
I paid £250.00 for it but i allready had the 100PSI pump and varistream which he fitted to the trolley for me.
Its great thing havent had any problems what so ever with it.. i would recomend one if thats what you want a trolley system. in the summer i will get a 400lit tank in my van and can use both trolley at awkward propertys so am very happy
dacve