I am currently on a financial diet. Which means that all my book buying compulsions are limited to adding them to my Amazon wishlist. Since the diet started, the list has grown considerably... If I was to buy all of them (Prime) it would set me back £254.53. I'm never getting enough gift vouchers at Xmas to cover this.
I got up to £200 and there were a good few pages of my wish list left ! I put hings on my list as a memory aid as much as anything, then I look out for the book at the library, or in charity shops or when they come on offer on Kindle. I've got a few on there that are only in hardback at the moment so about £10, but they will come down in price at some point.
In reality I rarely spend more than £2 on a book, usually 99p when they are in daily deals or sales.
Nice, most of my books rarely come up in charity shops or really cheap. A lot are specialist books related to my profession because i'm a geek who actually reads that stuff for fun. I do make good use of ebook bike for fiction, holiday type reads.
I have no idea! I have 330 books on my TBR list on Goodreads, plus a fair few others on an Amazon wishlist.....
Like you, most of my books come via the charity shop - that, or the library, or the Deal of the Day on Kindle. My brother-in-law kindly got me a £20 Amazon voucher for my birthday and I got a lovely pile of second hand books from my TBR list. Best present ever