I'd love to have a pair of quad hets. But unfortunatly I don't expect to see any for sale soon or when we do for them to be within my price range. If I had the money to buy a snow male and a hypo stripe female and a hypo pied female to breed him to (the animals for these pairings actually exist) it would be a hard sell to breed them together and produce normal looking offspring when they could be bred to thier own types and produce clutches of 100% double homozygous. I don't think many would be willing to pay as much for a quad het as say for a hypo stripe or a hypo pied.
But the cool thing about having a pair of quadrouple hets would be the mind boggling variety they could produce. Sure it might take a lifetime to hit the 1 in 256 quadrouple recessive (if you could even tell by looking) but you could produce a huge variety of single, double, and even triple morphs. Also, the chance of each egg containing a non visual would fall to 81/256, less than 1 in 3.
Here is the Punnett for breeding quadrouple het albino (a), axanthic (x), stripe (s), and hypo (h) together: