Concur 100% - "I'm wary of as you tend to get what you pay for."
The ad is at least right in that a quality-grade complete setup normally runs $300+ for all those parts. The low price for that kit "made me look" further, and I stopped after looking up just one part. A legitimate centerlink is at least $50 (and an ACDelco is $70):
Not near enough left over for even a 1/3 what's remaining. lol
You would do well to pour over the dozens (maybe hundreds?) of past threads and stickies on various coil options as there's way too much history, buyer experience and specs than what anyone can recount all at once here again. There's also a good deal of intel in here on what shocks and coils behave well together - and don't. It depends 100% on what you're after for looks-performance-comfort... I admit never hearing of Hotchkis shocks before your post. For that money (or less) I have fallen in love with Bilstein for my past 4 cars in a row. A used setup of Konis I got (0% front - 20% rear) have been treating me right on my new FWB. Others favor HAL QA1, and some are satisfied with more economical Monroe Severe Service, and either the single or double valved KYB (one design is way too weak for stiff coils - I don't recall which).
\'96SS SOB: SSRI, Herter Tune, Tri-Y II, , 3000 Edge, F/HO bars, METCO extendeds with CV MMC, Bilsteins, currently Vredestein Ultrac Sessanta (315/35 rear). Finally, wait for it... LT-4 knock module!
\'96FWB BUW-Butt Ugly White: PCMPerformance tune, HDFA w/ swissed filter, 1/2 SLP s.s. catback with H- and Flow Super 50s, oem opti rebuilt 3 times, SS Bars, METCO LCA, Airlift 1000, Monroe SS, PowerTrax No-Slip, CTS wheels with +1 rubber. Finally, yes again... LT-4 knock module!