Facebook showed me an ad for a "German boutique pen". The images appear to be a Montblanc 149 fountain pen($935 value), but the price is $35 for 2 of them.

Nowhere in the page does it mention Montblanc. However, their logo is on the case and pen cap, and the nib reads "4810 18k MONTBLANC 750" which is also on the real pen.

The product is here: https://l***.com/products/limited-time-offer-buy-1-free-1-only-today-luxury-gold-plated-fountain-pen-free-shipping?variant=24461018