What kind of lasers? You can get a green pointer from dealextreme for $16 if thats what you mean

If you meant scanners, then yeah, it can be done fairly cheaply, but once you have something up and running, you always wanna upgrade it in some way or another, and thats when you get sucked in. I remember when I bought my first SP20's, and I said I wasn't going to upgrade, but now I have DT25's and considering a FB3. Anything can happen in this hobby, but not spending money is never an option