Is there any danger to swapping between brands of T gel?

The site I get my gel from has two different types. One is a little less expensive than the first one, and I buy that instead when I can't afford my usual.

Both are 10mg 1%w/w, so I'm guessing that it isn't going to do much, no? Just making completely sure.

Both brands are Cernos and Testosign if that's necessary!