Pros: Fast, aggregated data, easy to filter.

Cons: May miss offline-only deals.

Best for: Initial research and finding best prices.

Pros: Accurate stock, direct support.

Cons: Time consuming to check one by one.

Best for: Checking specific store loyalty points.

Pros: Negotiation possible, see product.

Cons: Travel time, limited checking.

Best for: Urgent purchases.

Pros: Used deals, community advice.

Cons: High scam risk, no warranty.

Best for: Budget / Used parts.