Where to buy large number of submersed bunches

want to add a large number (20-30 bunches) of submersed plants to the pond. Where is the least expensive place, in your experience, online. Stores are obviously crazy, $3-4 per bunch but I know they sell it mostly to aquarium keepers. I am looking for a bulk stem deal.

paradise

There are many pond places to order from. I use William Trickers most of the time. There are others but when I find a good one I stick with them.