I have purchased over a hundred feeders from them at local so cal shows. Their rodents are top notch and packaged well. I've never ordered from rp or any of the other online companies so maybe someone else can chime in on them.
I purchased a chest freezer just for my feeders so I stock up whenever I can. I believe if you package the feeders correctly, you can keep them for up to a year. I believe Layne Labs has a q & a section that might answer that question.
I have 10 bps and a jcp so buying in bulk is way cheaper and convenient.
Hope this helps