1.1-kg 1.75mm JAYO 3D Printer Filament (PLA, ABS, TPU & More) 10 from $82.80 + Free S&H

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Currently, there is a 20%-off eBay sale (code: SHOPBRANDS20), which can be combined with the “buy 10, pay 6” discount on Jayo 3D printer filaments.
The deal price is for black PETG filament, but you can mix and match colors and materials like ABS, PLA or TPU to get any ten rolls. This, as well as the slightly larger 1.1 KG rolls, are advantages over the many AliExpress offers, where you can usually only buy pre-defined bundles.

This is how the 10x black PETG example looks at checkout:

Items (10) $172.60