Define cheap version? Sportsman's Warehouse, Uline, Walmart have 30gal between $60 and $75 and open end with lid ring lock for about $50. A trash can will work depending on what base camp water storage is?
Cheap ones are reconditioined and not FDA approved. New ones are more expensive. Since they're like coolers, pay a little more, get the new ones and they'll last you for a long while.
My local coca-cola bottling distributor used to sell the empty plastic drums the soda syrup is stored in; of course once I bought a couple a friend found some really inexpensive ones on Craigslist