Onaha on coins,small towns and onaha and Midas chasidus to take back up to 12 months

How we know onaha both for the buyer and seller,what does it mean there’s no onaha for the tagar, and noseh vnosen bamana

Less then and more then a shtus according to the rabanan when is the mechila and onah for a non merchant

Going back on one’s words and where do we say onah is it only on value or even sale price

Machlokes maos konos Mdoraisa,machlokes if mi shapara is a curse or notification,and is mi shapara on the rest more then a down payment

If somebody buys something with a sack of cash, who provides the suddar for chalippin,can you use peiri for chalipin, and is maos konos min hatorah

Can you be koneh money with chalipin and lahalacha can you use money for chalipin

3 ways to understand machlokes bais shamai and Hillel if gold is a currency when being podeh peiros and making a kinyan chalipin with money

What is considered currency and what is mitaltilin

When giving money to a shulchani when can he use it and what is he chayev,machlokes bais shamai and bais hillel when the price fluctuates,and is saying your gonna be sholeach yad enough to be chayev