There are lower priced Scotches which are among the 'best sellers' category such as Famous Grouse and White Horse. However, I would suggest you start attending Scotch tastings. Limiting yourself to just a select few due to price keeps you from experiencing the wonderful world of Scotch. Taste differences are huge (for example Ardbeg compared to Glengoyne) so it's best to experiment with as many Scotches as you can. And while yes, it can get expensive, save those for special occasions while in the meantime drink a much lower priced and great tasting Scotch such as Famous Grouse.