vik3001

I am in the process of buying a townhome and the radon level is > 4. it is 6.2. should i buy the home if the seller puts a mitigation system? or should i just walk away from the deal since mitigation systems dont work much. anybody else in this situation ever. pls help, need advice more data: the seller said that he lived in the house and did a test many yrs ago close to 1.0. also he has rented it since then, but the tenants moved out in feb and its been closed for 4 months, the windows, doors etc. only once a month seller goes to get his mail. is the closed condition also contributed to a 6.2 reading?