I just bought my first machine, really have no idea about them except they are fun to play! Just had a quick question after reading through the manual. My machine has about 30,900 plays. I have no idea if this is good or bad, so I thought I'd ask. What is the typical machine expectancy? Is 30k low mileage or well used? Looks to be in fairly nice shape for a 1993 machine, working through some other details but curious as to what I bought? Thanks in advance! (It's Bally 5000 Plus)