When I bought my 550HG back in 2008 I knew what I was buying, bought it from a retailer and due to customs etc paid about $140. Was still much cheaper then what Spydercos go for at retailers.
I have used the knife on hikes, dressing game, bushcraft skills, tried to stone wash the blade myself, sharpened numerous times each time with a new technique. Still going strong.
Despite the feel of the handles, it can take a pounding, never cracked, only a few dings.
Was my first $100 + knife and it made me realise, materials used, edge geometry and a good design xosts a bit more. After that I jumped to handmade and customs and CRK.
In short, though it can feel cheap, it is a good workhorse and good design. Don't let the handles fool you. It is tough. Same as FRN used by spyderco, 'plastic' technology is just as complicated as metalurgy. Look at the abuse a pelican case can take.....plastic
Congrats on a fine knife IMO!