Sealed Rca
Good Buy or Bad?

Okay so today i went to go buy some subwoofers for my car and i found this place in my town that sells car audio stuff. Now tell me if this is worth the money or what should i get to make it worth it.I have a 2008 Honda accord Sedan EX. with no Nav

the package the shop gave me is:
2 10” Diamond D1
1 Sealed Box
1 800RMS Amp
1 Hi/lo Converter
1 RCA
1 Powerkit
1 Capacitor
+Installation
+2 Year warranty on Subs
+1 Year Warranty on Amplifier
The grand total would be $450.
Now tell me if thats a good deal or should i get something else.

well, i never heard of diamond is a good company, go to crutchfield.com to buy and cardomain.com at audio section for advice

12″ Sony XPLOD Subwoofer Demo w/ High To Low Level RCA Converter – Stock Radio & Aftermarket Amp