Are you in the market for a new, shiny alien artifact? Then, boy oh boy, do I have an offer that you cannot refuse! Discovered by yours truly, fetched from the depths of the Omicrons, the most well hidden artifact found by anyone to date!
Here's a little sneek peak at this absolute beauty of an artifact that's sitting in cargo hold right now:
Of course, it has been tested by top safety experts in the field, who have officially given it the status of "derelict". However, with a little encouragement, this thing can produce visual marvels! Place it in a sufficiently dark room, encourage it, and enjoy the most beautiful light show anyone in Sirius has experienced yet!
I am confident that this highest-quality artifact will fit perfectly in your collection, and for the low, low price of 100.000$, this shiny new toy could be yours! Remember, this is the only one of these artifacts that exists, so get it now while it's available, lest you regret it!

Those terms are most certainly agreeable.
As for the location of our exchange, I have atleast neutral standing with basically all of Sirius, so the choice is all yours. I'd prefer if we could meet up in the evening. Additionally, I have taken the liberty to secure this communications channel against any outside interference.