Avoid duplicate products
We tell you what you already have so you don't buy it twice.
Buy this + this. Skip that.
Tell us what you're trying to do. Alder gives you the right materials, quantities, skip list, and overbuy warnings. If your project budget is $100+, Smart Cart typically pays for itself with $20+ in savings.
What are you working on?
Coming soon
Small repair
Example
Window weatherization · Just starting
Items in your buy list
6
Items to skip
4
Estimated savings
$40.00–$180.00
Typical spend$80.00–$220.00
Avoids the $400/window acrylic insert kit, the designer thermal curtain, and the premium weatherstripping tape that does the same job as the $4 V-strip.
Avoid kit bundles
Right quantities for your space and scope — no pallets of extras.
Avoid contractor-grade for a small refresh
Get the right quality for the job, not more.
Avoid extra trips
One well-planned order saves time, gas, and frustration.
Smart Cart is right for you if…
- Pre-1990 Vermont house with intact frames and air-leak drafts
- You want a one-winter pass before committing to replacement
- You want the diagnostic order, not just a product list
Use Worth-It Plan instead if…
- Frames are visibly rotted, glass has failed, or you have a contractor quote in hand
$19.9924-hour refund window
Tell us what you're trying to do. Alder gives you the right materials, quantities, skip list, and overbuy warnings. If your project budget is $100+, Smart Cart typically pays for itself with $20+ in savings.