Should be interesting because in 6 months, at the most, if you own a namecoin you will be able to purchase a 1000 times more domain names than you can today. Currently it takes 11.1 NMC to purchase a domain name. With that same 11.1 NMC in 6 months you will be able to register 1,110 domains.
Sound familiar? The exponential growth is very similar in that of bitcoin.
After the last difficulty adjustment and the price overall rising in the ratio of NMC to BTC I'd say people are hanging on to them NMC's.
I don't know where you're getting your numbers from. The cost goes down by 50% every 8192 blocks. Once merged mining happens, it'll take at most 4 difficulty updates to bring difficulty to parity with bitcoin. That's just over 10,000 blocks. After that, cost goes down by 50% every 2 months. So in ~2 months merged mining will become a reality, then difficulty will shoot up in a matter of days to adjust to the new processing power. At this point we're about 16,000 blocks from now. That's 2 halvings of cost, so cost is 1/4 of what it is now. Then every 2 months we'll get another 50% decrease. So that's 1/16th of current cost to register a domain in 6 months. Hardly 1/1000th.
Currently we are at block 18242 and a domain costs 11.08 NMC currently. Now the following link states that at block 24,000 and on the cost of a domain will decrease by 4 times the current rate.
http://dot-bit.org/forum/viewtopic.php?f=2&t=151&start=10So if we generate an average of 6 blocks per hour 24 hours a day for 180 days we get:
6 * 24 * 180 = 25920 blocks
Now let's subtract the remaining blocks until 24,000 from now:
24000 - 18242 = 5758 blocks
Now subtract that from the 25920 blocks to get the total blocks that will be at a 4 times decrease in NMC to buy a domain:
25920 - 5758 = 20162 blocks
Now since we are moving at a rate of 4 times faster after block 24,000 it is accurate to say that using the domain cost calculator at
http://www.namecoin.us/tools.php the actual "block" we will be at will be:
20162 * 4 + 24000 = 104,648
So if we just used the average 6 blocks per hour over the next 6 months (180 days) the cost of a domain will be less than 0.01 NMC in 180days based on the calculator and using block 104648 as the "block" value we are going to be at.
Maybe 5 months was more accurate given that a price of 0.01 NMC occurs around 90k to 100k blocks.
So my math is that since it takes 11.08 NMC currently to buy a domain and in less than 6 months a domain will cost 0.01 NMC it is safe to assume that the price of NMC to buy a domain has decrease 1108 times.
Originally your math would have been correct but since the new updates to NMC network at block 24,000 will likely take place the prices for domains will go close to 0 NMC very quickly.