NewChic offers the Jinhu 0.8mm 60/40 Tin and Lead Solder Wire for $6.50 $5.50. Coupon code "Solder30" cuts it to $4.55 $3.85. With free shipping, that's the lowest price we could find by $2. It has a rosin core and is suitable for DIY projects and hobbies. Deal ends May 25.

Note: This item ships from China and may take two to six weeks to arrive.