damn thats even better than many of the good old day stories. 15 years ago you could get a complete fal built, on imbel receiver for $300. But with a used, but like new or excellent barrel ?If you don't/cant do moderate level gunsmithing, then you may want to avoid (unless the price is right and you've verified that it works well).
Those who build/smith FAL/L1A1/1A1 etc. can occasionally find a very workable starting point with some of the older CAIs. I paid around $300 for a CAI sporter about 15 years ago. It had an Imbel receiver in perfect condition, an Enfield barrel with no corrosion or measurable throat erosion and a sand-cut carrier. It provided many of the parts that eventually became my current favorite FAL hybrid.
If you're wanting to buy one to shoot reliably out of the box, Century probably isn't the best choice. If you do buy one, make sure that you know what the origin/manufacturer of the barrel, bolt carrier, trigger housing (lower) and upper receiver is and what condition they are in. Some of them are a good find for the money and some are just junk.