I agree. The RM has really milked its potential market since about 2013 and as such has lost a great deal of its credibility for me. I bought the commemorative proof sets in 2013,14 and 15 which I thought were nice coins in nice packaging, but there's no way I'm paying £95 for the 2016 set when the price was £65 two years ago for an equivalent set.
I liked the first two £20 coins but I have been less keen on the designs since, although I did buy a Longest Reigning Monarch one for £15 on eBay when I had a discount voucher! The £50 coin I think is a nice design, but the £100 coins don't appeal to me at all. I'd far rather spend that sort of money on some milled predecimal silver