I belong to the Borders Family History Society, and they sell Scotlandspeople vouchers to members at 30 for £5.65 instead of the usual Scotlandspeople online price of £7. Probably other family-history societies do this too, I don't know.
My wife, who is English, envies me the way in which within seconds I can often locate somebody I'm looking for and download B, M and D certificates, OPR and Census extracts, etc., at just 5 credits a page. And with the B, M and D certificates you are getting other people's entries on the same page for free - e.g. three entries per page in a births register. If you come, like me, from a little fishing village where everybody was related to everybody else, it's great to get these extra certificates for free, for you often know the families involved.
My wife has to use Ancestry to trace her English ancestors and is always being asked to pay more at a crucial juncture when she's about to find somebody. And they haven't transcribed all the records, even in the distant past. In Scotlandspeople's case it's just the more recent records that haven't yet been digitised, but they're working on it. Very occasionally the index is wrong and a particular birth, say, isn't on the page it should be. If you contact them they'll find it for you and refund the credits you've spent.
Harry