Unlike bitcoin, NXT has an alternative valuation in the form of the "decentralised MtGox feature" it is designed to bring to market.
When NXT becomes the first crypto currency with a decentralised exchange, then the transaction volume on this massive p2p exchange platform could dwarf that of MtGox, Bitstamp, Cryptsy and btc-e combined.
Holders of NXT will earn income from the tx fees that users pay while using the exchange.
Currently Bitcoin does about 100K transactions per day, at an average cost of 0.35 USD per transaction.
Assuming you have 1M NXT, you could mine about 100 NXT per day from the decentralised exchange. 1 NXT is the minimum transaction fee, so according to the bitcoin stats 1 NXT should be at least equal to 0.35 USD. Mining 100 NXT per day earns you about $35 / day in TX fees. That is $1050 per month.
However, that's just the income estimated from the total BTC transactions per day. In reality BTC transaction levels are quite small compared to those within MtGox and other exchanges, which do not take place in the bitcoin network. For example, today Mt Gox did over well over 3 million transactions, which dwarves the 100K transactions in the bitcoin network. That _could_ bring your daily tx fee income up to $350 on a day like today.
Also, these estimates do not include other decentralised exchange fees that can also be collected by miners, such as the fee for listing an asset. And, the transaction fess adjust with inflation. So, the long-term benefits of holding NXT are outstanding.
Thus, we speculate that the actual NXT valuation is going to be a multiple of 0.35 USD per NXT, possibly even 10 or 100 times that. We predict NXT will quickly surpass LTC, NVC, PPC and possibly even BTC in time.
Finally, unlike bitcoin, as more users come to the NXT platform your mining power will not decrease. This is because your NXT mining power is proportional to how much NXT currency you hold, not the number of miners in the network. With bitcoin you have to keep reinvesting into faster mining hardware every few months. With NXT your mining hardware is your NXT currency that you hold. The larger your balance the more powerful you mine NXT. With NXT you just buy your mining kit (i.e. your NXT) once, it consume no power, makes no noise, takes no space, cannot break down and never depreciates. Thus, from a mining perspective, a stake of several million NXT offers real value for money and maintains (or even increases) it's value over time. Simply put, with NXT, your mining "hardware" appreciates, while always mining the same percentage of blocks.
Thus, NXT, really is the next generation crypto currency and a solid investment with multiple ways to be valued. We believe NXT is currently highly undervalued.