Spend your money on 1-2 good books or videos, they will cut your learning time down and make the traps you have more effective.

10 good sets will out produce 30 poor sets.

Whenever you do purchase equipment of any kind go for quality over quantity. Good equipment that is well maintained should last for many years if not a life time.

Find what works for you in your area but always be open to ideas from others so you can continue to learn.

No trapping question is to dumb to ask other people for help on. Just remember one question can get 50 different answers, it is all based on what works for you in your area.

The ones I was looking at for fun, would give me 9 more

And thanks for the advice guys!!

Your wife will let you know when you need more traps, until she does, hide the new ones.

What is your 3-5 year plan? Or longer?
Typically it is far less costly per trap to buy traps by the dozen or in larger volumes than you are talking about. Sure it costs money to buy a dozen and use 4-6 for a few years but if your plan is to gain more permission etc. having some traps hanging is not real expensive. When you run short lines your income is small and in these times even smaller but your operating and or trap line costs are low. You were able to buy the gear you have now with non fur income so put some planning into your purchases. I also agree that buying some basic books or DVDS is a good investment. I did not have any trappers in my family so my knowledge came from experience, books, DVDs and demos at conventions.
You will also decide sooner or later if you want to put up fur or sell green or "in the grease" fur. You add income by putting up fur generally but you need to invest in more equipment and also time.
Bryce

If your going to have enough time to set, check and process fur i'd get some more. and get a few different traps for different sets so you can see what works best. like if you have all footholds for rats get a few conibears. for land trapping id try a few snares or cable restraints (whichever is legal in your state) and give them a try. one might work better than another and also different traps will have their purpose for their own sets that work better in certain locations.