If you are looking for solar eclipse bundles, B&H Photo has a limited time Tamron promotion that bundles the Tamron SP 150-600mm f/5-6.3 Di VC USD G2 lens with the Tamron Marumi 95mm DHG ND-100000 Solid Neutral Density 5.0 Solar Eclipse Filter (16.5 Stops) and a 5-pk of solar eclipse glasses, all together for $1499 with free expedited shipping.
The lens goes for $1399 on its own, and the Marumi filter goes for $299 on its own, so you are getting a $200 combined purchase discount. The glasses are just $5, so they are a rounding error considering the price 🙂
PRO TIP: if you are not familiar with the B&H Photo website, locate the “In the Box” section on the right hand side of their website, further down, to see what items are included with your purchase. They typically do a great job of showing the accessories by the manufacturer and then the items/accessories that may be included as a bundle or “free with purchase” promotions.
If you don’t want/need the Marumi filter, the lens without the two “solar accessories” is bundled with typical lens-y free accessories at Adorama (Corel software, filter kit, etc).