Ordering Information

Shipping Information

We generally ship orders via UPS or U.S. Mail to domestic and international addresses. Our shipping fees reflect our attempt to meet our actual (average) shipping expense. If you have special shipping requirements, as for palleted orders, or wish to specify a particular carrier, please contact Customer Service at customerservice@topscience.org.

Standard shipping to US (Approximately 6-14 days):
$0 to $20, add $4.95 shipping
$20 to $40, add $7.95 shipping
$40 to $65, add $10.95 shipping
$65 to $85, add $13.95 shipping
$85 to $100, add $15.95 shipping
$100 to $150, add $17.95 shipping
$150 to $250, add $23.95 shipping
over $250, add 10% shipping

Standard international shipping to Canada (6-14 days):
$0 to $20, add $10.95 shipping
$20 to $40, add $16.95 shipping
$40 to $65, add $22.50 shipping
$65 to $85, add $27.50 shipping
$85 to $100, add $30.95 shipping
over $100, add 30% shipping

Standard international shipping to all others (Varies by destination):
$0 to $20, add $19.95 shipping
$20 to $40, add $32.95 shipping
$40 to $65, add $45.50 shipping
$65 to $85, add $55.50 shipping
$85 to $100, add $65.95 shipping
over $100, add 50% shipping

Express shipping to US (Approximately 2-6 days):
$0 to $20, add $8.95 shipping
$20 to $40, add $15.95 shipping
$40 to $65, add $22.95 shipping
$65 to $85, add $29.95 shipping
$85 to $100, add $36.95 shipping
$100 to $150, add $42.95 shipping
$150 to $250, add $48.95 shipping
over $250, add 20% shipping

Orders require 10 business days, on average, for processing and delivery, occasionally longer if our small staff is away from the office. If your standard order doesn't arrive in 3 weeks, please inquire. Express orders to U.S. addresses may take up to 6 business days, and longer for international shipments. We will ship the fastest way covered by the shipping fee. If you need rush or expedited delivery, please email Customer Service at customerservice@topscience.org.

International Orders

Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to purchasing.

Our Guarantee

We guarantee your complete satisfaction, or your money back. There is no time limit to our guarantee, no restocking fee, and you do not need pre-approval from us before you return items. If you receive material that was damaged in transit, please let us know immediately in case we need to file a claim for the loss.

Returns and Exchanges

Send back any books or materials you don't want to keep, and we will refund your money or replace books with alternate titles more to your liking — your choice. Sorry, we can't refund shipping charges, unless your stuff arrived broken or we made a mistake in filling your order.

Returned merchandise MUST arrive in NEW, RESALABLE condition to receive a refund. If damage occurs due to lack of appropriate packaging, it will void our guarantee. Please include our invoice with your return package to insure proper credit or refund.