Before you buy
For non-essential purchases, try a short pause. Ask what the item replaces, how often you will use it and whether a cheaper existing item already does the job.
Pay less
Compare the final delivered price, not just a discount percentage. Check returns, warranties and seller reliability where relevant.
Get something back
Only after deciding to buy, check legitimate cashback, loyalty or rewards. Treat unconfirmed cashback as a possible bonus, not guaranteed money.