You can get transhipped wild stuff from Australia and maybe a few other places. Here is what to expect... a few/one that are good... a few turds... a few that die (probably your favorite and sometimes up to 50%)... most will just be kinda normal. Expect to buy between 20 and 30 pieces and the price to be well over $1000. You will have to pick up at a major airport - no FedEx or UPS.
They should look really good when you get them, but the colors will/might change. They are best to land under daylight, IME, since that is where they came from. I have not done this in a while, but landing under 6500k halides had best results and then they can slowly get changed over to other lighting. Some will die when you do this... part of the weed-out process. It can take 6 months to a year for the process to be complete if you do it part-time.
I land wild stuff in their own system and do NOT dip them for a long time. Too much stress on an already stressed individual. I dip them only after they start to grow, or if they show signs of big-time pests. Some pests will just die in captivity.
livestockusa is a good place to do this. Reliable and helpful. Their website is not easy to navigate, so just call them if you need to. They also can do mari pieces, but you will not get anything not already in the hobby.
If you just want to buy a few one-off pieces, then the acropora section on Divers Den can do this. You can bet that the ultra-sexy ones have been picked through already, but you can get some nice pieces.
If you do this, tally up the costs in frag tanks, lighting, time, losses, etc. and then you can see why a shop with overhead, family to feed, employees with families to feed, etc. all need to cash in for $500 a frag when they do hit the jackpot.