They are fairly easy to remove . I took mine out and dropped them off to be fixed . I had mine resealed by a company in Tampa fl whom is very popular on many boating forums . Price is relative I would suppose . They did great work and have a solid recommendation from many in the boating community . I will have to look for the email and or contact info As it has been a few years . When I find it I will send it over to ya if interested .
No worries ! Also If you are handy there is a guy on you tube called 1yachtcarpenter whom has a video disassembling a set of windows and re sealing them .