The cost of everything has gone up.
That includes vinyl production raw materials (it also costs more for short runs of product - especially if multi/coloured).
RSD is a popular event that (prior to covid) had people queuing around street corners with a chance to get things they wanted without having to negotiate with reseller scum. The indie shops have become reliant on that trade and it actually helps keep shops open on the High Street. Official Charts cites the resurgence in vinyl buying as being catalysed by vinyl that is unique, coloured, limited, re-packaged or containing rare material.
A 1 of 1500, coloured vinyl reissue of an almost 40 year old record might not be something people see as 'worth' 24 quid, but collecting doesn't work like that - it never has. I'd suggest a lot of collectors never consider the investment aspect - they just want to own the item.
The sellers don't actually make a huge profit on sales, but my local supplier says they do enough business during RSD to help stay open the rest of the year (especially more so during covid restrictions).
So, it always gets my support and I've supported independent shops for most of 40 years and some are still standing today.
As RSD has grown in popularity, so has the size of the release list (that's actually meant to be a good thing right?) and that in itself has encouraged some truly rare and interesting music to be made available (assuming you collect other music besides Morrissey - which I do).
From Vinyl Factory (UK figures):
"More than 5 million (5.3m) records were sold in 2021, the highest total since 1990.
This marks an increase of 11% on 2020 – making it the 14th consecutive year of growth for the format. Vinyl LPs now represent more than a quarter of physical format purchases."
So the trade is clearly thriving and has a future if the previous sustained growth is anything to go by. People are still happily spending regardless of anyone with contrary opinions regarding purchasing vinyl!
The fact other people don't 'get' my desire to collect something matters not one jot.
As mentioned previously: I'll take the 'do what you want' route