Double check your prices I'm gonna assume you have a typo when 40sq ft cost the same as 120sq ft of mbk
Prices look to be correct
MM87-2 N/A 2 sq.ft BL Series Speaker Kit $12.99
MM87-12 N/A 12 sq.ft BL Series Door Pack $45.99
MM87-20 N/A 20 sq.ft BL Series Trunk Pack $74.99
MM87-40 N/A 40 sq.ft BL Series Bulk Pack $138.99
MM87-120 N/A 120 sq.ft BL Series Shop Pack $379.99
MM87- LPK N/A Tag Plate Kit $11.99
MM90-2 N/A 2 sq.ft MDK Series Speaker Kit $14.99
MM90-12 N/A 12 sq.ft MDK Series Door Pack $57.99
MM90-20 N/A 20 sq.ft MDK Series Trunk Pack $94.99
MM90-40 N/A 40 sq.ft MDK Series Bulk Pack $171.99
MM90-120 N/A 120 sq.ft MDK Series Shop Pack $514.99