Python WebScraper w/ BeautifulSoup: Not Scraping All Pages – Ebay API

I’m a brand new coder who was tasked (by my company) with making a web scraper for eBay, to assist the CFO in finding inventory items when we need them. I’ve got it developed to scrape from multiple pages, but when the Pandas DataFrame loads, the number of results does not match how many pages it’s supposed to be scraping. Here is the code (I am using iPads just for the sheer volume and degree of variance in the results):

import time
import requests
import re
import pandas as pd
from bs4 import BeautifulSoup

data = []

# searchkey = input()
# base_url = 'https://www.ebay.com/sch/i.html?_nkw=' + searchkey + '&_sacat=0&_ipg=240
base_url = 'https://www.ebay.com/sch/i.html?_nkw=ipads&_sacat=0&_ipg=60'

for page in range(1, 11):
    page_url = base_url + '&_pgn=' + str(page)
    time.sleep(10)
    soup = BeautifulSoup(requests.get(page_url).text)
    for links in soup.select('.srp-results li.s-item'):
        item_url = links.a['href']
        soup2 = BeautifulSoup(requests.get(item_url).text)
        for content in soup2.select('.lsp-c'):
            data.append({
                'item_name' : content.select_one('h1.x-item-title__mainTitle > span').text,
                'name' : 'Click Here to see Webpage',
                'url' : str(item_url),
                'hot' : "Hot!" if content.select_one('div.d-urgency') else "",
                'condition' : content.select_one('span.clipped').text,
                'price' : content.select_one('div.x-price-primary > span').text,
                'make offer' : 'Make Offer' if content.select_one('div.x-offer-action') else str('Contact Seller')
            })

df = pd.DataFrame(data)

df['link'] = df['name'] + '#' + df['url']
def make_clickable_both(val): 
    name, url = val.split('#')
    return f'<a href="{url}">{name}</a>' 

df2 = df.drop(columns=['name', 'url'])
df2.style.format({'link': make_clickable_both})

The results of these appear like so:

Which is great! That last column is even a clickable link, just as the function defines, and operates properly. However, based off of my URL it’s just about half the data I should have received.

So, in the URL, the two key things related to this are page_url = base_url + '&_pgn=' + str(page), which is how I determine the page number for each URL to get the list of links off of, and &_ipg=60, which is what determines how many items are loaded on the page (eBay has 3 options for this: 60, 120, 240). So based on my current settings (pagination giving me 10 pages and item amount set to 60), I should be seeing roughly 600 results or so, but Instead I got 300. I added the timer to see if letting it load for a little longer or something between each page would help me get all the results, but I’ve had no such luck. Anyone got ideas about what I did wrong, or what I can do to improve? Any bit of info is appreciated!