If you have the knowledge and know how to repair this machine and pick it up for say $1500 as a project i reckon with your time and effort plus the purchase of new boards and the odd coil and parts etc you could have a working STTNG for around $2500... ( $1000 spent on parts and being generous )

When was the last time a STTNG was sold for as low as $2500.... There were a couple that sold on fleabay for high $2k's but IIRC they had more playfield wear than this particular one....

Time and patience is the key here, if you have an abundance of both then this will be a steal !