That's a little different don't you think?
If you buy a raffle ticket for a house, let's say you have a 1 in 100,000 chance of winning an actual property.
If you buy scratch cards, let's say you have a 1 in 4 chance of winning, sounds great, but most prizes are £1, £2, £5 etc. The odds reduce drastically if you're looking for prizes of £1000 plus. OP would need to buy 10-20 scratch cards at £1, £2 or £5 a pop. With the huge gamble she wouldn't even win her money back for the cards.
Same as the lottery odds -
45,057,474 to 1 (Lotto) 139,838,160 to 1 (EuroMillions) 15,339,390 to 1 (Set For Life) 8,060,597 to 1 (Thunderball)
Most people play the lottery and don't think about it.
At least the house raffles have a smaller pool of tickets and higher odds of winning something concrete. I can understand the appeal.