what a great topic to discuss over my morning coffee
personally I don't always feel rehoming fees prove who is a "good" potential or a reason to dismiss someone completely.
However I also feel that if a person can not pay a REASONABLE rehome fee they may also not be able to afford vet care for the glider.
Vet bills can become substantial veryyyyyy quickly, even if you can afford a reasonable rehome fee and if they are not able to provide vet care the animal will potentially suffer for their lack of funds. Gliders unlike dogs or cats require exotic vets and there is a considerable price difference for medical care.
Also in general I think a lot of people try to recoup some of the money they invested in the glider/s and what ever they come with.
If the gliders come with safe recommended cages wheels etc...and are fairly new or well taken care of sometimes they are a pretty goood deal and are sometimes the most economical way for someone new to get started without having to invest as much money ... so it depends on what they come with and how you look at it.
There are some individuals that don't have rehome fees, from what I have seen they are usually on a time restraint and need to rehome them quickly or the glider needs urgent medical care the owner can't provide. Personally I have had several gliders either given or surrendered to me for various reasons.
Having said that...... nothing is ever free. Taking in gliders is not cheap even if you don't pay a rehome fee and everytime you take one it you can potentially expose your current gliders to something contagious.
The above is speaking about individuals that rehome. The following is pertaining rescues and people who work with surrenders and rescues....
When rescues or foster homes rehome gliders their rehome fee is usually only enough to cover neuters and or medical care that they have provided out of their own pocket. The fees also help provide for new gliders coming into the rescue or foster so they have equal standards of care as the gliders that were previously adopted out.
Most often rescues and foster homes take a financial hit on the adoption fees and don't charge all of what was actually invested.
They usually have a protocol in place and ask a lot of questions to see if the potential new owner will meet the foster or rescues standards. They won't dismiss new owners just for the sake of being new if the new owner is willing to learn.
There are however many people that foster and work to rehome gliders that will wave an rehome fee for the right glider, person and or situation and do their best to HELP someone keep their glider rather than feeling like they need to rehome them.
I've worked with rehoming gliders in the community and have a few resources nation wide that may be able to help you find a cage mate for your single if you really feel he needs one. But I would first determine that he does in fact need one before you make the decision to either rehome him or get a cagemate.