I do use Scotlandspeople but I resent how expensive their charging structure is.
The cost of viewing one certificate at Scotland's People is currently £1.50, which is rather less than a cup of coffee or a pint of beer. And you get your certificate instantly.
The corresponding charge in England and Wales is £6, and it is about to go up to £7 (not quite five Scottish certificates)
Queensland charges AUS$22, equivalent to £12.19 (8 Scottish certificates)
New Zealand charges NZ$25, equivalent to £13.16 (nearly 9 SCottish certificates)
Victoria has just reduced its charge to AUS$24.50, equivalent to £13.57 (9 Scottish certificates)
New South Wales charges AUS$34, equivalent to £18.84, plus a credit card surcharge (12 Scottish certificates).
Certainly you can rack up a lot of money if you get carried away, but the charging structure is one of the cheapest for getting online access to historical certificates bar a very few states and countries who make them available free.
And the Scottish pre-1855 church records and censuses to 1901 can be viewed free of charge in many libraries and family history centres, including, by arrangement, in LDS Church FHCs anywhere in the world.