Cheap C152 or inexpensive 152?
As you ask the question I can tell you about a very inexpensive C152 but it is not the cheapest!
For the cheapest rock bottom price just look around the USA (don't forget to price the hotels & airline tickets) and UK and you will find a shed load of under maintaned unloved aircraft that have high time engines, very old half working avionics and smell as if the carpets are supporting some type of pond life.
You have to ask your self if to save maybe £200 on your hour building you want to risk your life to one of these aircraft?
Or you can call me to find a well maintaned aircraft that has a low time engine & modern radios (as well as a company that has a good AOG spares holding in case things do go "tech") And this at a price that is inexpensive without being the aircraft being "cheap".