Sam owns a home$-$based embroidery business. He is considering buying a new sewing and embroidery machine. The Janome Memory Craft $14000$ Sewing and Embroidery Machine bundle is priced at $$6500$ and will save approximately $30$ hours of time $($valued at $$20$ per hour$).$ As an alternative, Sam estimates purchasing the newer Janome MB$-4$S Four Needle Embroidery Machine will save approximately $60$ hours of time $($valued at $$20$ per hour$).$ Both models have the same annual maintenance costs. Based on the true economic value, how much should Sam be willing to spend on the Janome MB$-4$S$?$

a$.$

$$6500$

b$.$

$$4700$

c$.$

$$7100$

d$.$

$$5300$