Ok.. I posted to your other posting as well, but in case you don't see it I wanted to post here and let you know. Technically, if you get them back, when you pay for them again the 15 day period starts over again, so if there are problems gain,you could go through this process all over again until you have no problems for longer than two weeks.
However, and I can't say this with enough sincerity. Do NOT let that thought comfort you into thinking that doing this over and over ( should it seem to be necessary) is a good idea, that you can make sure you have well pigs, and t no vet costs. The consequences of blindly trusting in that system can have dire consequences. Please, please, go check your boys and visit with them every day!
First and foremost, I have no doubt you have built a relationship with your boys already, and I I know from very recent and painful experience that they have started to bond with you. They do not forget in the couple of days they have been there! Also, as much as you care for them, you are far more likely to notice subtitle changes in them when you visit,even out of their regular environment, that can signal decline, rather than improvement and you can notify the proper people and get them more care.
When they do come home, if you notice another problem,even within the 15 day time frame, please, do not take them back again, the back and forth alone will put enough stress on them and likely make the worse! They need consistency, stability, and caring for, especially when not feeling well.
Just bite the bullet and take them to your local vet (with experience in caring for gpigs). If money is that big of a consideration, perhaps it is best to think about if owning a pet at this time, is the best option. I am in no way trying to sound like I am judging you, or lecturing you. I just don't want you and your boys to suffer from the same horrible, mistakes I made.
The choices I blindly made in the last week, will be with me a very, very long time. Especially at night, when less than a week ago I was rocking sweet Lucy, wrapped in her pink blankie,in her favorite chair, while watching tv, and tonight, I am sitting here typing the letter, with her empty blankie in my lap, and tear-stains on my face again. I will keep you and your boys in my thoughts. I hope all goes well, and you are safely together gain soon!