If you look on the T&M website, you'll see Ponerorchis at half price. ie 3 bulbs for £14.99....that's almost as cheap as Paul Christian's rejects! (ie mixed after he's taken all the good selections out). Two packs and the special offer and you would have 8 plants to experiment with for about £4 each, which is probably as cheap as you'll find them on the members bench at shows, if indeed they haven't been snatched up while being carried in from the car!
I've never seen seed for sale, but they do set seed, so you might try growing the tiny bulbs for a year, cross pollinating or selfing the best and try your hand with fresh seed.