That's just crazy.. I bought two GDP regs from Herbies singles for $35. Both were women. Both were good. Cloned both and the 2nd generation wasn't any better than the first. Save your money. It's good, but you could experience a Landrace from 6 different continents from ACE for half that price. I suspect Gorrilla carries ACE too. Looking for something original...
Mr. Nice carries "THE" White Widow
Serious has "THE" AK47 and Bubblegum
I think Dutch Passion has "The" Blueberry
Sensi is a class act breeder of Skunk
Humbolt for some more contemporary Cali strains
I'm not telling you to pass on the GDP. I'm all about regs. and GDP as a breeder, but 5 for $250? Your only a dud and couple males from a total wipeout. It's your money... spend as you wish. A good weekend has set me back much further, these will entertain you for much longer. Just a bit steep IMO. A good solid strain should cost you about $100/10seeds for the true big name original genetics.
Edit...
Just checked Herbies. 10 Regs for $150. I would consider this a premium for what you stated was "the most in demand" strain and would gladly pay that. Remember, the GDP that is raved about was a clone only strain. I suspect GDP has come close to recreating her, but you may have to pop a bunch to find it.