Ever since Apple "refurbished" their Refurbished site, it is terribly bad to navigate and find what you want.
Even sorting by price does not work and the prices are all scrambled. It used to be so easy to see all the included specs for each unit and now you cannot see that without looking at each one individually.
It looks to me like there are some bugs in how it's implemented and also that the current day use case outgrew their originally designed use case. While the bugs are annoying, they're not bad enough that they're going to devote time and resources to fixing them right away.