I just paid $30.00 for a sewing stool to go with the 15-91 I have. (My sister said my parents got rid of the stool years before.) If the machine tests out, the $90 seems reasonable to me, the San Diego area. I just saw $300.00 on one. Personally I would take the cabinet too but I prefer sewing on a machine in a cabinet over a machine on a table. I have the extended tables for my Janome, but got the table it sets in with the machine and much prefer it. My little Europro came with an extended table, and it's better than nothing, my Husqvarna Designer came with an extended table but I bought the Sew Ezi to set the machine into.
Let us know what happens.