Well, my LFS has a 50gal tank (I think) that has all of it's live FW plants inside. They have some bamboos, swords - it's not really a great selection - and doesn't look overly attractive as some of the plants I think look really rough. However, that could be simply due to the move - and I think poor lighting. They also have discus in there with them. (I don't know if those do damage to plants at all, but they are in there - just sayin.)
If my LFS did have a little variety, and healthier looking plants I'd undoubtedly jump to buy from them. I haven't had much luck buying from out of country plant vendors, and actually only received one plant (out of five) thus far. Kind of dissappointed, but with the lamp being off almost all of the time due to the heat eminating from the bulbs - it's probably for the best there are no live plants in there.
Curious, in your tank in the LFS, would you let them stock fish in there as well? Would you plan on supplying the tank? I would also assume you would care for the plants within your home or at the nursery, and distribute them yourself, and stock the tanks? (that could actually be a fun job... visiting pet stores all day...

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Can I work for you?