The Real Cost of Modernizing

I was recently gifted a Dreamcast, Controller and VMU but without any cables. I wanted to modernize it like my other consoles and did so. I figured I'd share the cost breakdown with you all. Tax breakdown is for Califonia Taxes. (edited to add noctua fan)

Item Price Taxable Sales Tax (CA) Total
Striker DC $49.95 Yes $3.62 $53.57
SD Card $26.99 Yes $1.96 $28.95
Battery $6.59 Yes $0.48 $7.07
HDMI Adapter $29.99 Yes $2.17 $32.16
Power Cord $8.99 Yes $0.65 $9.64
PCB Repair Kit $9.99 Yes $0.72 $10.71
GDEMU $70.49 No $0.00 $70.49
Noctua Fan Mod $39 .85 Yes $2.89 $42.84

Subtotal (Taxable Items): $172.45
Sales Tax (7.25%): $12.50
Non-Taxable Total: $70.49

Grand Total: $255.44