You already mentioned that though. You wouldn't have necessarily got a 42 times return though, you're talking about investing here a bit later on, you're only hearing about this now via your trader friend - if it cost you double to invest for example then you're looking at 21 times return... Of course, if it were that easy and that common then everyone would just allocate some of their portfolio to a few of these AIM cash shells and make $$$$$
Yup, just keep in mind that it is a punt. They raised circa 30million initially, then a further 50-ish million more recently (at 155p a share). Share price is now 240p a share, so there is some confidence there in this team.
But look at what you're getting - they've got circa 80 million in cash/assets, but at the current price of 240p a share the market cap is circa 200 million... so if you were to invest say £2000 you're basically buying £800 worth of cash/assets and paying a premium of £1200 for your confidence in this team and what they'll do.
On the plus side, it does indeed look like a good team, they've invested significant amounts themselves and clearly, the price is going one way at the moment, though that's before they've necessarily done much (bar, seemingly one acquisition the results of which are to be seen). It's not an unreasonable thing to perhaps anticipate that were you to invest now you might see further increases in price as they make more acquisitions or indeed complete further rounds of funding for that purpose, certainly, the people who bought in at 155 just a few months ago are looking at a nice profit already at the moment. Whether they're successful in the long run is another matter. AIM cash shells got a bad rep in the 00s, some very shady people got involved in them and investors got absolutely screwed, these guys, on the other hand, seem to be the real deal, it's still a small company and rather speculative but the good intentions seem to be there.
It is worth just making sure you know what you're getting into with these things, they're very much a gamble and it is all too easy to get swayed by narratives/promises of huge returns but if you're happy with that and willing to take a punt then, just treat it as such, an investment that might pay off but which you can afford to take a big hit on if it doesn't. Generally not considered to be the sort of thing to commit very much of your portfolio to.
Anyway, the above isn't meant to be investment advice etc.. just my thoughts.