Amazon offers Prime members the RTIC 30-Oz. Stainless Steel Tumbler with Lid, model no. RTIC30, for $11.99 with free shipping. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $6.40.) That's tied with our mention from two weeks ago and the lowest total price we could find by $16. (For further comparison, it was available for $5 less ten days ago, however that was limited to Alexa users only.) It features a clear lid and stainless steel, double-wall construction.

Update: The price has increased to $14.50.