Normally training centers (CAE at least) will offer a discount to private individuals. I know a GV type at SimuFlite DFW would be 25% less for a private individual supposed to you being sent there by a company.
Could also be worth checking with
PSB Business & Commercial Pilot Discount Simulator Training. They claim to provide substantial savings on initial type ratings and recurrent, including the 300. I have personally never used them so I can't vouch for their business, but no harm in giving them a call.
That guy's story sounds reasonable to me.