TV AND MOVIE TOYS

Question for anyone in Japan, about gashapon.?

My friend is going to Japan in January (lucky) and I was wondering how “accessible” gashapon is, if there are such shops full of them at a lot of places, because I was thinking of lending him some money so he could run around and buy me like…a lot of different gashapon figures.
I’ve seen pictures of stores that have long walls with only gashapon dispensers.

100~500yen.
In the case of gashapon figures, at least it costs 300yen.

Emily Sterling Engine Thomas & Friends Gashapon Set