The keystone to both trade systems is a mapping of trade codes to value modifications. In theory, Merchant Prince's table can be used in a Book-2-like way.
I don't think it really can. The keystone of Bk2 is each different good has its own modifiers list. The keystone of Bk5 is that everything uses a modifier list based upon where it's from.
The MT tables provide (unlike CT Bk7) explicit lists of what kinds of goods they are, and whether they are hazardous, require power, require atmosphere, etc.
Adding prices to it ala Bk2 isn't going to make the system any more able to be used in a Bk2 fashion - It may as well be a single roll for base value as an exponent of ten.
Instead, to get Book 2 like play, use the tables of MT to generate a cargo type and its traits, and have a value assigned based upon that type. Then, you can use it in a book 2 like way. The problem is the Book 2 and T20 cargo values are only a subset of those needed to match the MT tables.
Plus, there's the issue of the credit values - the goods on the Bk2 tables were priced pretty much by rounding off the 1976 spot market prices... per metric ton. But cargo tonnage later became displacement tons, and those are generally 5 to 10 metric tons per each. The general goods in CT are also priced in roughly 1976 US dollars as the credit value. (The ground car is a Ford $3995 list price... the prices of firearms and ammo can be found to be taken straight from advertisements in magazines from 1976.) Which leads to some interesting wonkiness...
Computers are not priced by any apparent methodology other than an idea that a TL10 hand computer would be a TL6 mainframe in a pocket sized package. (Assuming we're TL8, we've exceeded that a bit. Note that ENIAC is a TL6 mainframe. So is a CDC 7600 - at 10 MFlops and $5,000,000. Let's use that as the Model 1 (it's pretty close). The TL8 Surface Pro 3 has a 30MFLOP processor, more memory, and is about $1200... in 2015 US dollars. Or about $500 in 1977 dollars.
Still, this does underly the issues of the trade and commerce: it's based upon a different assumption than the ship design rules give for deck plans, which means consumer goods are marked up about 900%...