Calyth,
You're facing the external knife nut problem. You save up enough for a 204 and then decide to spend the money on a new knife instead.
Based on my experience, go for the 204 as soon as you can afford it. It's easy to use, comes with great instructions, and will last a life time.
I've seen them as low as USD 42 plus shipping. You may want to post in the wanted to buy section since there are always people moving up to a professional system like the EdgePro who may be willing to part with their 204.
Are there any Forum members close to your location that have a 204 you could try out?