I'm finding it quite alarming that there are various shops and brokers advertising suggies for 75 quid each, beacause apparently thats the market value! They talk about them like they're nothing more than a commodity! Glider prices need to stay high because they're NOT hamsters, you can't just throw a handful of rodent (or bird) mix in the cage and be done with it! They need specialist care and these people are encouraging anyone to buy them just to line thier own pockets!!
Before buying suggies from this type of person, consider this, I wouldn't sell my suggies to these people (I've turned away 3 different people) despite the fact I do have 'spares', I keep them myself rather than they sell them to an unknown, uninformed person. They cannot give the same sort of advice an experienced breeder can, they don't 'care' about the animals, all they're interested in is money, money, bloody money!! You have no assurance that they feed a good diet never mind an optimum diet, look at how many shops have a cage with suggies and a bowl of rodent mix in there!
You have no idea who the breeder is, the conditions the parents are kept, the diet they're fed which is important to the 'quality' of the animals. You don't know if they've been handled, you basically have no idea what you're getting; unless of course they'd tell porky pies ... anthing for the $$$!!
They will of course sell singles!!!!

From a breeder, I'm not saying everything will be perfect, but if the person is genuine, they will offer good, sound advice, will socialise with their animals, feed a good diet, keep them as pets rather than a way to make money, be bothered about who buys them and they'll offer after care.