If you should need to contact us about an existing order, please send us E-mail through the contact form-- this is the fastest and most certain way to contact us.

Payment
You can place your order directly from our site using PayPal or any major credit card. Credit card payments are processed through a secure credit card gateway; no one at Evil Mad Science will ever see or handle your credit card number. By special arrangement we also accept payments through Google Checkout, domestic or international wire transfers, institutional purchase orders, or a plain old paper check. Please contact us if you would like to set up an order with us using one of these alternate means.

Shipping
We offer a choice of shipping by USPS Priority Mail and USPS Express Mail and charge actual postage rate for shipment, domestic or international. There is no minimum order; if you're willing to pay for freight, we'll be happy to send you any size order. For US orders, we also now offer free ground shipping for orders of $75 or more.

To find shipping options and actual costs for your order, please add the items to your shopping cart. Then, on the checkout page, enter the destination Country, Postal Code and State, and your options will be displayed. (You do not need to enter any personal or payment information.) Particularly heavy orders-- above 60 pounds-- may not be suitable for USPS shipping in a single box; please contact us if our cart is unable to automatically provide pricing for you.

We make every effort to keep products in stock and to ship products quickly; most orders ship from stock within three business days. While many orders do ship on the day ordered, we do not-- as a matter of policy --ever guarantee same day shipment or exact delivery date.

California Orders
9.25% Sales tax will be collected on orders shipped to California addresses unless prior arrangements are made.

Local Pickup
Our San Francisco warehouse is not accessible to the public. Prepaid orders can usually be picked up at our Sunnyvale office, by advance appointment. Not all products are stocked in Sunnyvale, and we do recommend Priority Mail as the most efficient means to deliver items to our Bay Area customers.

International Orders
We ship to most countries. Our "regular" international shipping method is USPS International Priority Mail, which takes 6-10 days to most destinations worldwide. Shipping by USPS Express mail is strongly recommended for all international orders. It is slightly faster, more reliable, and provides tracking information that Priority Mail does not.

Please note: Actual value will be declared on customs forms. Recipient is responsible for any and all local taxes and/or customs fees that may apply at your location-- such fees are independent of our shipping charges. Also note that unexpected delays can sometimes occur in customs processing, and that this is also not within our control.

Making Changes to Existing Orders
If you need to add additional items to your order, the easiest way to do so is to (1) let us know that you would like to do so-- so that we hold your before it ships -- and (2) place a separate order for the additional items. We can then combine shipping costs and issue a refund the excess postage paid.
If you would prefer it, we can instead send a PayPal invoice for just the additional items and any incremental shipping cost incurred.

Canceling Orders
Any order for stock items can be canceled for a full refund, right up until it ships. Please contact customer service with your order number if you would like to do so.

Returns
Because of the DIY nature of our products, we do not accept returns on kits that have been started. We will, however, replace any missing or faulty parts or products ASAP-- Please contact us right away if something doesn't look right, or if you need technical (or moral) support on a project.

Provided that they are still in original condition, we can accept returns on most stock items. If you decide that a product is simply "not for you" before digging in, please contact us for a return authorization and address. When we receive your shipment, we will issue a full refund less shipping costs. Returned orders need to be received within 45 days of the original purchase or a restocking fee may apply.

Undeliverable packages
We do our best to make sure that our products really get to you. However, if all else fails and the post office returns to us your package as "undeliverable," it is our policy to refund your order less shipping costs.