Charles and Jack have done some impressive things with very inexpensive server power supplies. It's a very DIY type of project and not for everyone, but you can't beat the price.
Also look into Mean Well power supplies, I have a 600W 15V unit that is enough for most tasks. Mine came used from eBay at a reasonable price ($60-70 for two of them I think). They also make 24V supplies of higher wattage which is what you'd need to run the PL8 at full power from 120VAC. But at that point you best be making sure you're not going to start blowing fuses or tripping breakers.