I would second AuraSeer's comment, get a Boccob's Blessed Book. Although I think that it still costs 100 gp to scribe a spell into it. Still quite a saving.
Learn craft woundrous and the secret page spell and pop one out whenever you need a new one for all of 4,250 gp and 380 xp. So long as you scribe spells of level 3 or higher into it, you will come out ahead. It is quite handy for a higher level wizard to make a back-up spell book to leave at home, or a traveling spell book so as to not risk his entire collection while adventuring.
Learn craft woundrous and the secret page spell and pop one out whenever you need a new one for all of 4,250 gp and 380 xp. So long as you scribe spells of level 3 or higher into it, you will come out ahead. It is quite handy for a higher level wizard to make a back-up spell book to leave at home, or a traveling spell book so as to not risk his entire collection while adventuring.