...Just because you never worked with automail before? [He pulls a face. It's not really his place to object, but...] Sheesh. All you machine freaks are the same.

[The frown's gone when he looks back up at Billy, though.] Seriously, though, are you sure? I don't mind paying. Kinda been saving up for this. [He reaches into one of his pockets, extracts a small drawstring bag and waves it in front of him for emphasis.]