I would say go for it, just don't pay full price, as others have said get it at a good discount or buy a good one 2nd hand.
I did this a couple months ago, replaced my mini 1 with a 2nd hand mini 4 (32 GB cellular) from Cex. Comes with a years warranty from Cex. The bonus is that I found the Apple warranty still valid and runs until March 2018, so whoever owned it previously did not keep it long.
I did this a couple months ago, replaced my mini 1 with a 2nd hand mini 4 (32 GB cellular) from Cex. Comes with a years warranty from Cex. The bonus is that I found the Apple warranty still valid and runs until March 2018, so whoever owned it previously did not keep it long.