Jordanians pay tip in every single purchase, yes, every single purchase. They pay tip generously whenever they buy food, clothes, etc.!
Jordanian tip rules are:
1) You must pay tip.
2) You must pay it for every purchase or service, not for restaurants only as in the USA.
3) Buyers always love to pay it and sellers do not like to get it!
4) Jordanian tip ranges from 50%-100% of the price of the total purchase.
5) Buyers will be very disappointed if seller do not want to take the tip (Jordanians are generous).
6) Sellers do their best to avoid it. They do not like it.
7) Buyers always try to pay as much as possible tip.

Sellers always try to make the tip as less as possible.
9) Buyers and sellers may have a fight if the seller do not want to get the tip.
10) Tips causes hassles in the Jordanian society and in the Jordanian market, since sellers do not want to get tip and buyers want tip.
11) Jordanian tip is negative.