How much time does the ink last until I am forced to spend 5 more dollars on more ink?

With a question raised like that, I don't think you'll be buying one. However, I have one I bought at Johnson Space Flight Center in 80's. I've refilled it 6 times. Think it was almost $10, I had to wonder around the store thinking about it before I shelled out that much cash. Worth every penny.

Is it retractable? Is that deformity at the top for putting pressure on in order to release rhe tip of the pen, dispelling the ink?

It is retractable. And no it does not dispell the ink with pressure. It acts just like a ball point pen, but built like a tank.

Taking into consideration the very special ink that this pen uses, would this be a good choice for a lefty? It seems that this ink may smear easier

I am a lefty and I am on my 3rd one of these. It like most other pens can smear, but I would consider it within or a little better than lefty normal level of smearing.

Can the seller engrave this item?

I took mine and a gift one to a local jeweler/watch repair shop and they engraved names for $10 on ea one.

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Space Pen Black Titanium Nitride Original Astronaut Pen, Gift Box | Pressurized Ballpoint Pen Writes Upside Down and in Extreme Temperatures, Black Ink, Medium Point, Pocket Clip, Made in USA

Product ID: 38168583

Details

Age Range (Description)
Adult
Brand
Fisher
Color
Black Titanium
Ink Color
Black
Writing Instrument Form
Ballpoint Pen

🚀Writes upside down in zero gravity

🛡️Titanium Nitride plated for durability

❄️🔥Operates from -30°F to 250°F

€ 214.02

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Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🖊️ Write Beyond Limits — The Pen That Went to the Moon and Back

WRITE LIKE AN ASTRONAUT - Trusted by NASA since Apollo 7, this pen conquers zero gravity and any angle.
BUILT TO LAST A LIFETIME - Titanium Nitride plating ensures unmatched durability with a lifetime guarantee.
EXTREME CONDITIONS NO PROBLEM - Performs flawlessly from freezing cold to scorching heat, underwater, and beyond.
MADE IN THE USA LOVED WORLDWIDE - A family-owned legacy pen that’s a must-have for professionals and explorers alike.
SLEEK PROFESSIONAL AND POCKET READY - Compact design with a knurled grip and pocket clip for on-the-go excellence.

The Fisher Space Pen Black Titanium Nitride is a pressurized ballpoint pen engineered to write upside down, in extreme temperatures (-30°F to 250°F), and underwater. Made with durable titanium nitride plated brass, it features a medium point black ink cartridge and a knurled grip for precision. Trusted by NASA since Apollo 7 and crafted in the USA, this pen combines space-grade reliability with sleek, professional design, backed by a lifetime guarantee.

Specifications

Additional Features	Waterproof
Age Range Description	Adult
Asin	B01MT1COPT
Best Sellers Rank	#26,686 in Office Products (See Top 100 in Office Products) #650 in Ballpoint Pens
Body Shape	Round
Brand Name	Fisher
Closure Type	Button
Color	Black Titanium
Customer Reviews	4.7 4.7 out of 5 stars (3,292) 4.7 out of 5 stars
Drill Point	Medium
Global Trade Identification Number	00747609960006
Grip Type	Knurled
Hand Orientation	Ambidextrous
Hardness	F
Included Components	Ink Cartridge
Ink Base	Oil
Ink Color	Black
Item Diameter	0.37 Inches
Item Dimensions	5.1 x 0.4 x 0.4 inches
Item Weight	0.04 Kilograms
Line Size	1.1 Millimeters
Manufacturer	Fisher Space Pen
Material Type	Titanium Nitride Plated Brass
Model Name	ag7,apollo 7
Model Number	AG7-BTN
Subject Character	Blue Origin Feather
Theme	Space
Unit Count	1.0 Count
Upc	747609960006
Warranty Description	Lifetime Guarantee
Water Resistance Level	Waterproof
Writing Instrument Form	Ballpoint Pen

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