Money Saving Tip:
Change your lines regularly if they have been used.
For lines that haven't been used too much, try windign them onto another spool keeping the most unused part on top.
Any new reels you buy, pack them with old lines that been well-used at both ends. Keep the windings very tight as they go on the spool.
To preserve your lines and get longer casts, try spraying them with Armour-all. Yes, the spray for your car's dashboard. (Works with most lines.)