Received an email this morning for 50% off everything at Opallac online store with code BLACKFRIDAY (doesn't stack), plus free standard shipping over $80.
Couldn't see any mention of exclusions to the sale, but let me know if you come across any and I will include them here.
If you buy a bulk polish pack (5, 10 or 15), you get the 50% discount on top of the bulk-buy discount.
Link to the bulk packs - https://www.opallac.com/collections/duo-packs/products/bulk-...
While I prefer Opallac polishes over most other brands due to the longevity and colour range, I would recommend purchasing a higher wattage LED curing lamp for ~$50 from Amazon or eBay rather than the Opallac gel kit which comes with a 7W lamp.
I personally have a 54W lamp and it cures each coat in 30secs, whereas a 7W lamp can take 3-4mins to cure.