If i may, i believe with the right equipment...... You could salvage yourself. May cost more in the end but to learn a new skill AND have the right stuff you'd be able to keep it in laying shape for a much longer time yourself. Lmk if interested.

But as a teaser, an impact drill of your choosing, a bristle drill like this one (such as Cleaning Supplies - Drill Brush - Soft, Medium, Stiff Scrub Brush Variety Kit - Leather - Mirror - Glass Cleaner - Bathroom Accessories - Shower Cleaner - Tub - Bath Mat - Outdoor - Garden Statues https://www.amazon.com/dp/B01KEC7LEG/ref=cm_sw_r_apan_i_06C6BQDRNXV2GCMERANX?_encoding=UTF8&psc=1 or CLEANZOID Drill Brush Set Attachment Kit Pack of 3 - All Purpose Power Scrubber Cleaning Set for Grout, Tiles, Sinks, Bathtub, Bathroom and Kitchen Surface (Drill Not Included) https://www.amazon.com/dp/B07G5C5R1K/ref=cm_sw_r_apan_i_QH5G2NQVWV3YSCXD2V8X, options and such are only limited by how stiff of bristle if bristle you're trying to use and imagination on what to do with them and where, also speed of rotation of drill) from Amazon and some cleaning liquid, (i usually stick with meguiars everything except when it comes to rims and tires) but even just to get rid of mold a Spray bottle and some vinegar/water mix should help clear up that mold. Steering wheel, seats, for panels, only thing i wouldn't recommend it on is the head liner, that's a whole different kinda TLC. LMK what you think.