The problem with your idea is that most of the businesses that sell CPs are not making that much of a profit off of each plant by the time it sells from what I've heard. Most of the plants CP vendors sell are imported from places such as BE, EP, or MT. If you look at their wholesale prices they're paying what maybe $10 a plant on average. They also have to pay for shipping costs, the different soil mixes for potting up the plants when they arrive, the pots they go in, the water to water them, the heating unit/ac unit to cool and heat their grow space, fertilizer, electricity for lights, etc. The price per plant goes way up. While in school the current research said that when selling plants retail, to guarantee you make a profit you should take the wholesale price and multiply by 8 and thats the price the consumer should pay. Granted thats to give you a minimum of 200% return. All the nurseries I order from are completely reasonable on their pricing especially considering the rarity of most of the plants they're selling. Asking them to lower their prices is like asking them to give up making a profit and to just break even so that their customers can pay less, no sane business owner would ever consider such a thing.
On another note, I tanked the Nepenthes 'Rokko' market by doing a massive giveaway of cuttings where I just asked people to pay the cost of shipping and now I have 15 plants that I'm trying sell and I can't find a buyer (not trying to advertise selling my plants just making a point).