@Eran S. I would echo what @Jonathan Greene stated: the most important part is having access to the properties whenever you want. Being able to schedule a showing for a go-and-show (available to show whenever with automatic agent confirmation) 15 minutes before you want to see the property is a blessing. No matter how great the buyer agent you are working with, we can all get busy with other clients/deals/etc. that may disrupt your ability to see a property. In my market, for a competitive listing, the ability to see a property as soon as you want could well be the difference between getting it or not.
You are decently close to the yearly costs associated with holding a license. If you decide to join a local Realtor board, then you can factor in CE classes (every 2 years). Additionally, most offices will have some form of a monthly fee associated with holding your license at the brokerage. There are many that are more investor-agent-friendly, you just need to do some research about your area.
Ask 10 different people on BP about becoming an agent as an investor and you will get 10 different answers. My 2 cents: It is worthwhile as long as you understand your responsibilities for disclosure when talking to sellers. You can land yourself in some real hot water as an agent-investor if you are going direct to seller and don't disclose your licensure.