I recently ordered a ruler for $7 (15 sq) and didn't read carefully. Sounded to good to be true but ordered anyway. The order confirmation said it would take 4-6 weeks to get it. We watched the doorstep for the delivery since 15" would not fit in mailbox. When a small package arrived it was from China and I could not figure out what it could be. When I opened it it was a 15cm square ruler! Lesson learned and a good laugh. Will read more carefully next time -- maybe read twice and order once.